NAVFAC MIL-HDBK-1004/6 Lightning Protection

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ELECTRICAL ENGINEERING CRITERIA MANUALSCriteriaManual Title PAÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄMIL-HDBK-1004/1 Preliminary Design Considerations CHESDIVMIL-HDBK-1004/2 Power Distribution Systems PACDIVMIL-HDBK-1004/3 Switchgear and Relaying CHESDIVMIL-HDBK-1004/4 Electrical Utilization Systems CHESDIVDM-4.05 400-Hz Generation and Distribution CHESDIVSystemsMIL-HDBK-1004/6 Lightning Protection CHESDIVDM-4.07 Wire Communication and Signal CHESDIVSystemsDM-4.09 Energy Monitoring and Control HDQTRSSystemsMIL-HDBK-1004/10 Cathodic Protection (Proposed) NCELNOTE: Design manuals, when revised, will be converted to military handbooks.This handbook is issued to provide immediate guidance to the user.However, it may or may not conform to format requirements ofMIL-HDBK-1006/3 and will be corrected on the next update.
LIGHTNING PROTECTIONCONTENTSPageSection 1CODES AND POLICIES1.1 Scope . . . . . . . . . . . . . . . . . . . . . . . .11.2 Cancellation . . . . . . . . . . . . . . . . . . . .11.3 Policies . . . . . . . . . . . . . . . . . . . . . .11.3. Lightning Protection . . . . . . . . . . . . . . . .11.3.2 Local Codes . . . . . . . . . . . . . . . . . . . . .11.3.3 National Codes . . . . . . . . . . . . . . . . . . .1Section 2SYSTEMS2.1 Types . . . . . . . . . . . . . . . . . . . . . . . .22.1.1 Primary . . . . . . . . . . . . . . . . . . . . . . .22.1.2 Secondary . . . . . . . . . . . . . . . . . . . . . .22.1.3 Combination . . . . . . . . . . . . . . . . . . . . .22.2 Primary Systems . . . . . . . . . . . . . . . . . . .22.2.1 Lightning Masts . . . . . . . . . . . . . . . . . . .22.2.2 Grounded Aerial Conductors . . . . . . . . . . . . .22.3 Secondary Systems . . . . . . . . . . . . . . . . . .22.3.1 Air Terminals . . . . . . . . . . . . . . . . . . . .2Section 3SYSTEM COMPONENTS3.1 Masts . . . . . . . . . . . . . . . . . . . . . . . .103.1.1 Material . . . . . . . . . . . . . . . . . . . . . .103.1.2 Top Point . . . . . . . . . . . . . . . . . . . . . .103.1.3 Height and Location . . . . . . . . . . . . . . . . .103.1.4 Zone of Protection . . . . . . . . . . . . . . . . .103.1.5 Joint Design . . . . . . . . . . . . . . . . . . . .103.1.6 Joint Test . . . . . . . . . . . . . . . . . . . . .113.1.7 Metal Mast Foundation . . . . . . . . . . . . . . . .113.2 Grounded Aerial Conductors . . . . . . . . . . . . .113.3 Earthed Energy Dissipation Systems . . . . . . . . .113.3.1 Electrodes . . . . . . . . . . . . . . . . . . . . .113.3.2 Ground Counterpoise . . . . . . . . . . . . . . . . .113.3.3 Radials . . . . . . . . . . . . . . . . . . . . . . .113.3.4 Plates . . . . . . . . . . . . . . . . . . . . . . .12Section 4INSTALLATION4.1 General . . . . . . . . . . . . . . . . . . . . . . .134.2 Design Calculations . . . . . . . . . . . . . . . . .134.2.1 Earth Resistance . . . . . . . . . . . . . . . . . .134.2.2 Soil Resistivity . . . . . . . . . . . . . . . . . .134.3 NAVFAC Design Guides . . . . . . . . . . . . . . . .134.4 Ordnance Facilities . . . . . . . . . . . . . . . . .134.4.1 Storage and Handling Facilities Above Ground . . . .134.4.2 Earth-Covered Magazines . . . . . . . . . . . . . . .134.4.3 Cranes on Piers and Wharves . . . . . . . . . . . . .134.4.4 Marshalling Yards (Truck and Railroad) . . . . . . .144.4.5 Railroad Sidings . . . . . . . . . . . . . . . . . .144.4.6 Electric Service . . . . . . . . . . . . . . . . . .14
Page 1 and 2: ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Page 3 and 4: ABSTRACTThis handbook provides basi
Page 5: FOREWORDThis handbook has been deve
Page 9 and 10: PAGE ix IS INTENTIONALLY BLANK
Page 11: Section 2: SYSTEMS2.1 Types. Lightn
Page 20 and 21: 3.1.6 Joint Test. After assembly, e
Page 22 and 23: Section 4: INSTALLATION4.1 General.
Page 24 and 25: 4.5.2 Grounding. Provide protection
Page 26 and 27: APPENDIX APRIMARY LIGHTNING PROTECT
Page 28 and 29: In accordance with para. 3, Appendi
Page 46 and 47: APPENDIX BINTERNATIONAL SYSTEM OF U
Page 48 and 49: APPENDIX B (Continued)AMERICAN WIRE
Page 50 and 51: REFERENCESAmerican National Standar

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